:root {
    --bg-color: #0d0f14;
    --card-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-primary: #e0e6ed;
    --text-secondary: #94a3b8;
    --accent-blue: #3b82f6;
    --accent-green: #10b981;
    --accent-red: #ef4444;
    --accent-gold: #f59e0b;
    --font-main: 'Outfit', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(59, 130, 246, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(16, 185, 129, 0.05) 0%, transparent 40%);
    min-height: 100vh;
}

.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    margin-bottom: 3rem;
    text-align: center;
}

header h1 {
    font-size: 3rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    background: linear-gradient(to right, #fff, var(--text-secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-top: 0.5rem;
}

main {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 2rem;
}

.glass {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
}

.visualizer-section {
    display: flex;
    flex-direction: column;
}

.canvas-container {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

#mhc-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.overlay {
    position: absolute;
    top: 20px;
    left: 20px;
    right: 20px;
    display: flex;
    justify-content: space-between;
    pointer-events: none;
}

.feedback-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 0, 0, 0.4);
    padding: 6px 14px;
    border-radius: 100px;
    border: 1px solid var(--glass-border);
}

.feedback-indicator .label {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    letter-spacing: 0.1em;
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-red);
    box-shadow: 0 0 10px var(--accent-red);
    transition: all 0.3s ease;
}

.dot.active {
    background: var(--accent-green);
    box-shadow: 0 0 10px var(--accent-green);
}

.steering-hint {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.6);
    padding: 8px 16px;
    border-radius: 12px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.steering-hint span {
    color: white;
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: var(--font-mono);
}

/* Tracing Visualization */
#tracing-viz-container {
    margin-top: 1.5rem;
    width: 100%;
    aspect-ratio: 16 / 5;
    overflow: hidden;
    position: relative;
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

#tracing-canvas {
    width: 100%;
    height: 100%;
    display: block;
    transition: filter 0.6s ease, opacity 0.6s ease;
}

#tracing-viz-container.blurred #tracing-canvas {
    filter: blur(8px);
    opacity: 0.15;
}

#tracing-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 24px;
    z-index: 5;
    transition: opacity 0.4s ease;
}

#tracing-overlay span {
    font-size: 0.8rem;
    font-family: var(--font-mono);
    color: var(--text-secondary);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

#tracing-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

/* Controls */
.controls-grid {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.control-card {
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.control-header h3 {
    font-weight: 600;
    font-size: 1.1rem;
}

.control-header p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Switch Styling */
.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 26px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #334155;
    transition: .4s;
    border-radius: 34px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--accent-blue);
}

input:checked + .slider:before {
    transform: translateX(24px);
}

/* Perception Meter */
.perception-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
}

.perception-meter {
    width: 100%;
    height: 8px;
    background: #1e293b;
    border-radius: 100px;
    overflow: hidden;
}

.meter-fill {
    height: 100%;
    background: linear-gradient(to right, var(--accent-red), var(--accent-gold), var(--accent-green));
    transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Scenario Card */
.scenario-card {
    margin-top: 1.5rem;
    padding: 2rem;
    position: relative;
    transition: all 0.4s ease;
}

.scenario-badge {
    position: absolute;
    top: -12px;
    left: 24px;
    background: var(--accent-blue);
    padding: 4px 12px;
    border-radius: 8px;
    font-size: 0.75rem;
    font-weight: 600;
    font-family: var(--font-mono);
}

.scenario-card h2 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

.scenario-card p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.scenario-meta {
    display: flex;
    gap: 10px;
}

.tag {
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.tag.success { background: rgba(16, 185, 129, 0.15); color: #34d399; }
.tag.danger { background: rgba(239, 68, 68, 0.15); color: #f87171; }
.tag.info { background: rgba(59, 130, 246, 0.2); color: #60a5fa; }

/* Buttons */
.primary-btn {
    background: var(--accent-blue);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 12px;
    font-family: var(--font-main);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
}

.primary-btn:hover {
    background: #2563eb;
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.4);
    transform: translateY(-2px);
}

/* Automation Control (Range Slider) */
.automation-control {
    flex-direction: column;
    align-items: stretch;
    gap: 1.5rem;
}

.range-container {
    padding: 0 10px;
}

#automation-level,
#perception-level {
    width: 100%;
    height: 6px;
    background: #1e293b;
    border-radius: 100px;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
}

#automation-level::-webkit-slider-thumb,
#perception-level::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: var(--accent-blue);
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.5);
    border: 2px solid white;
}

.range-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 0.75rem;
    font-size: 0.7rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
}

/* Modal Styling */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    transition: opacity 0.3s ease;
}

.modal-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.modal-content {
    width: 90%;
    max-width: 500px;
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.modal-content h2 {
    font-size: 1.5rem;
    text-align: center;
}

.question-block {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.question {
    font-size: 1rem;
    color: var(--text-primary);
}

.likert-scale {
    display: flex;
    justify-content: space-between;
    padding: 0 10px;
}

.likert-scale label {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    cursor: pointer;
}

.likert-scale input {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-blue);
}

.likert-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.modal-footer {
    margin-top: 1rem;
}

@media (max-width: 900px) {
    main {
        grid-template-columns: 1fr;
    }
}